21393968

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43133}}^1$

素因数の和:43172

約数の個数: 20

約数和(自身を含む): 42788928

約数和(自身を除く): 21394960

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43133, 86266, 172532, 345064, 690128, 1337123, 2674246, 5348492, 10696984, 21393968]

約数ペア:

[(1, 21393968), (2, 10696984), (4, 5348492), (8, 2674246), (16, 1337123), (31, 690128), (62, 345064), (124, 172532), (248, 86266), (496, 43133)]